US 11,719,195 B2
Limiting cap
Tamotsu Saito, Tokyo (JP); Tomoyoshi Kudo, Tokyo (JP); Yuta Onuma, Tokyo (JP); and Ryosuke Imai, Tokyo (JP)
Assigned to YAMABIKO CORPORATION, Tokyo (JP)
Filed by YAMABIKO CORPORATION, Tokyo (JP)
Filed on Nov. 27, 2020, as Appl. No. 17/105,977.
Claims priority of application No. 2019-215042 (JP), filed on Nov. 28, 2019.
Prior Publication US 2021/0164419 A1, Jun. 3, 2021
Int. Cl. F02M 3/10 (2006.01)
CPC F02M 3/10 (2013.01) [F02M 2003/105 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A limiting cap assembled onto a needle valve which is screwed into an adjustment hole of a fuel adjuster, comprising:
a main body in a cylindrical shape to be arranged onto a protruding part of the needle valve which protrudes from the adjustment hole,
wherein a rising part, which is inserted into a recess formed in the fuel adjuster for restricting rotation of the needle valve, is formed on an outer peripheral surface of the main body,
the main body includes an engagement part on a side closer to the adjustment hole and a fixing part on a side away from the adjustment hole with respect to the engagement part,
a first splined part formed in an inner peripheral surface of the engagement part is engageable in a circumferential direction of the main body with a second splined part formed in an outer peripheral surface of the needle valve,
a needle valve fixed part of the needle valve is press-fitted into the fixing part, at a position away from the adjustment hole with respect to the engagement part,
the fixing part is formed to have a smaller inner diameter than the engagement part, and
a space, extending from the fixing part to an end surface of the main body away from the adjustment hole, defined in a radial direction between a groove within which a tool is to be inserted and the main body, and including a larger inner radial diameter than any point along an inner surface of the fixing part, the space creating a gap between the needle valve and the limiting cap.